File surf-flex-update.patch of Package surf

--- surf-1.0.6+git20251126.4cc0a3e/surf/yaccsrc/polylexyacc.h	2025/11/27 17:56:46	1.1
+++ surf-1.0.6+git20251126.4cc0a3e/surf/yaccsrc/polylexyacc.h	2025/11/27 17:57:33
@@ -83,7 +83,6 @@
 
 /*  Global data: */
 
-extern int yyleng;
 extern long error_begin_char;
 extern long char_number;
 extern long line_number;
@@ -101,6 +100,7 @@
 
 void yyrestart(FILE*);
 int yyparse(void);
+int yylex( void );
 void set_the_yyinput(char*, long, long);
 
 symtab* symtab_add_name(const char*);